(John McDonnell/THE WASHINGTON POST)

Trent Williams hasn't been perfect this preseason. Asked to judge his first two preseason games, though, the second-year left tackle doesn't think he's been too far off.

“The whole preseason, I think it's about two plays I wish I could have back,” he said. “But we're going against great defensive players, too. I have to give them credit. If it weren't a for a couple plays, I think I'd be pretty much where I want to be at this point.”

Through two preseason games, the Redskins' first-team offensive line has fared fairly well, particularly when it comes to run-blocking. But Thursday night's game at Baltimore should be a new challenge entirely. Because the Ravens will likely be giving a bit more effort than the Redskins saw against Pittsburgh or Indianapolis, this third preseason game will be a more accurate gauge for the Washington offensive line. Is the starting group significantly improved or not?

"We're making strides. ...It's just another year in the system," Williams said. "Everybody's comfortable. Everybody knows their assignments. When you know what you're doing, it makes the game a lot easier."

They'd better know versus the Ravens. Baltimore has allowed the fewest offensive touchdowns the past two seasons, but last year's 27 sacks was the fewest posted in the franchise's 15-year history. The early returns suggest the Ravens will be aggressive in chasing the passer this year. In two preseason games, they've been blitzing safeties and corners. Last week against Kansas City, the Ravens posted five sacks and nine quarterback hits.

Williams knows it will be a big challenge and says the game at Baltimore is “a chance to test yourself and see how good you really are.”